I have a 2005 chevy tahoe. 2wd. 5.3L. I caught a bid at the last minute for a brand new complete lowering kit. 4 shocks, torsion keys, and rear coil springs. the number is Ground Force 9956... I was told this is ONLY 4wd but also told it will work with both can anyone shed light on the subject before i waste my money on buying?! I paid $270 good deal for being new.